1.Earphone,mp3 ,compute,pc, headset,Ear Hook , easy to carry; 2.Comfortable all-inclusive probe covers, 1Earphone,mp3 ,compute,pc, headset,,Ear Hook Mic Dimensions Ø6.0X5.0mmSensitivity -39dB±3dBlmpedance ≤2.2kΩDirectivity OmnidirectionalDriver Diameter Ø30.0mmlmpedance 32ΩFrequency Response 20~20kHzSensitivity(S.P.L) 106.0dB±3dB(at 1KHz)Input Plug Diameter Ø3.5mmCord Length 2.5metersNet Weight ...